Demottotable bim



J. N. FOSTER.

DEMOUNTABLE RIM.

AFPLaCATloN meu Nov. 25, Ima.

1,305,957. Pah-mm1 Juno 1T, 191).

3 SHEETS-SHEET l* I. N. FOSTER.

DEMOUNTABLE RIM.

APPLlcAHoN mw Nov. 26. 191s.

1 ,306,957. Patented June 1T, 1919 3 SHEETS-SHEET 2.

WIM/3555 Nw'fimitcws mc mun wnsmnmou D C l. N. FOSTER.

DEMOUNATABLE HIM. 'APPucAnoN mw Nov.zs.191.

1 ,306,957. 1111111111111 June 1r, 1919.

3 SHKETS-SHEET 3.

moved, showing the parts in one 'UNITED STATES PATENT OFFICE.

JOHN N. Fos'mn, or EL PASO, mas. ASSIGNOR or ONETSIXTH ro HENRY Enom In ONE-SIXTH fro O'r'ro NORDWALD, BOTH or EL Paso, rms.

DEMOUNTABLE RIM.

pecication of Letters Patent.

Patented June 17, 1919.

Application led November 26, 1918. Seriarlpldbln.

State of rFeiras, have lnvented certain new and useful Improvements in Demountable Rims, of which the following is a specification. l

My invention is an improvement in demountable rims, and has for its object to provide a rim of thel character specified, which may be locked to the rim or unlocked therefrom with a single operation.

In the drawings: i

Figure l is a side view 'of the improved wheel, with one of the housing plates reposition;

Fig. 2 is a partial side View of the cmplete wheel;

Fig. 3 is a view similar to Fig. 1, show'- in the parts in another position;

ig. 4 is a view similar to Fig. 2,' showing another position of the parts shown in said Fig. 2;

Fig. 5 is a partial side view of the cam fiere;

ig. Gis a partial slde View of the r1m showing the locking mechanism for the pinion;

Fig. Fig. 2;

Fig. 8 is a top plan view of the guide pin and roller;

Fig. 9 is a transverse section of a modified form of wedge;

Fig. 10 is a similar view showing a modified form of telly and elly band.

In the present embodiment of the invention, the improved rim is shown in connection with a wheel consisting of the usual hub 1, telly 2 and spokes 3 connecting the hub and the felly.` The rim or telly' band 7 is arranged about the felly 2 and the auxiliary rim, indicated at 4, is arranged outside of the felly band. The said rim, which is of any usual or desired. form, has secured to the inner face thereof a ring 5, by means of rivets. as shown. and this ringhasaseres of radial inwardly extending lugs 6 for a purpose to be presently described.

The ring 5 tits about the telly band 7. and thc tell)y hand is held to the telly 2 h v means of bolts. 9 which are passed through radial lugs 10 on the telly hand and through openings in the telly, to be engaged by nuts 7 is a section on the line 7-7 of '11 at the opposite side of the felly. A bxshmg 12 encircles each bolt Within the opening ofthe felly. Each of these bolts 9 has a head 13, and the head of each :bolt is partiallycut away as shown, to permit the passage of the radial lug'f of the ring 5, when the said cut away portion is turned into register with the lug. 1*'

At the opposite fa'ce of the Wheel1from the bolt heads' 13 there is1 arranged a-cam ring 14, the said ring having a series 1of cam slots 15 which extend substantially trans versely thereto. Each of these camfslots is engaged by a. roller 16'l p'izn 16 connected to the inner end of: a lever 5 adapted 'to bear against` the inner Aface of the rim 4 at the opposite side from the head 13 of the bolt 9 to support the said rim at this point. l

The' ring 1 4 is mounted to rotate c Y xially with respect to the Wheel, being supported by angle pins 19 which have threaded en gagement with the respective spokes, one portion of -each pin being threaded toengage the spoke and t-he other extending. substantially parallel with the `lane vof ythe wheel and engaging outside o? the ring 14.

A roller-` 20 is journaled on each pin ,on that portion which is perpendicular to the plane of the wheel. each roller '20 being engaged by the inner edge of the cam ring. Thus the cam ring is supported to rotate coaxially with the wheel and it has a series of rack teeth 21 on its peripheral edge, which are in engagement with the teeth of a pinion 22 secured to a shaft 23 journaled transversely of the telly of the wheel proper. This shaft carries at the end remote from the pinion a-ratchet wheel 23, Whose teeth are adapted to be engaged by a pawl 24 pivoted on the wheel.

This pawl has a notch 24 in its upper edge which is adapted to be engaged by a cam or eccentric 25 on a pin `26 also journaled in the wheel. 'The pin 26 and the shaft 23 have polygonal heads. as shown, for engagement by wrenches 'to turn the same. and the head of the shaft 23 has a diauietrical opening for engagement b v n pin or lever to obtain :sufficient leverage in turning tho shaft.

In usc. the rim 4 rests at one odge nu the telly hand. aud at the other is supported by the ca1u-heads I8 of the levers 1T. To de- ]ournaled on a headed whose outer endfhas a. cannhead.18

mount the rim, the pawl 2i is released by turning the pin Q6, and the shaft 23 may then be turned to turn the cam ring 1l. This ring is turned in a direction to move the conneeted ends of the levers 1T inward. This movement of the lever brings the lower portions of the cam heads inward, and the rim may now be demounted after the heads 13 of the bolts 9 have been `turned to permit the passage of the lugs 6. To mount the rim, this movement is reversed.

It will be noticed, referring to the drawing, that each of the bolts 9 has a polygonal portion upon which the adjacent lever 17 is arranged, the' arrangement being such that when the bolt is turned the lever must swing4 and when the lever is swung the bolt must turn. When now the cam ring is moved angularly of the wheel, thev levers are swung simultaneously to cause the heads 18 to release the rim 4 and at the same time the bolts are moved to bring the eut away portions of the heads into register' `with the lugs 6, so that the rim may be demounted. Thus the releasing of the internal pressure and of the lateral lock is simultaneous.

In Fig. 9 is shown a modified form of Wedge 30,' corresponding to the element 6 of lFigs. 1 and 2. In Fig. l0`the telly 31 is riveted to the element 32, corresponding to the element 7-10 of Fig. 7, as indicated at 34.

I claim:

1. In a wheel, a demountable rim. said rim having at one edge of its inner face a opposite edge of the rim to sup ort the same, means for locking the rim rom lateral movement away from said supporting means, and a common means for moving the first named means into operative and release positions and for controlling the locking means for the rim, said first named means comprising levers pivoted to the felly and having cam heads for engaging the demountable rim, the moving means for the levers comprising a earn ring mounted to rotate on the wheel.

2. In a wheel, a demountable rim` said rim having at one edge of its inner face a ring adapted toseat upon the felly band of the wheel at one side of the band, means in connection with the wheel and movable outwardlywith respect thereto for engaging theopposite edge of the rim to support the same, means for locking the rim from lateral movement away from said supporting means and a common means for moving the first named means into operative and release positions and for controlling the locking means for the rim, said first named means comprisin levers having cam heads pivoted on the ily band, the last named means consisting of lugs on the demountable rim and bolts forming the pivotal connections of the levers and having heads for engaging the ring of the demountable rim, said heads being cut away at the lugs to permit the passage of the same when turned into the proper position.

JOHN N. FOSTER.

'Witnessesz A. H. Gomsrm, NAN B. SMITH. 

